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Before contest
Codeforces Round #696 (Div. 2)
3 days
→ Filter Problems
Difficulty:
—
implementation
combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
meet-in-the-middle
number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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Problems
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Custom test
Problems
#
Name
158A
Next Round
*special problem
,
implementation
800
x99657
282A
Bit++
implementation
800
x87464
112A
Petya and Strings
implementation
,
strings
800
x85324
263A
Beautiful Matrix
implementation
800
x84723
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x80166
281A
Word Capitalization
implementation
,
strings
800
x77225
266A
Stones on the Table
implementation
800
x73019
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x71125
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x63449
791A
Bear and Big Brother
implementation
800
x62749
977A
Wrong Subtraction
implementation
800
x59723
116A
Tram
implementation
800
x59037
59A
Word
implementation
,
strings
800
x55913
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x55426
110A
Nearly Lucky Number
implementation
800
x54414
41A
Translation
implementation
,
strings
800
x53210
734A
Anton and Danik
implementation
,
strings
800
x52490
467A
George and Accommodation
implementation
800
x49913
677A
Vanya and Fence
implementation
800
x49188
136A
Presents
implementation
800
x48523
344A
Magnets
implementation
800
x46133
1030A
In Search of an Easy Problem
implementation
800
x45821
705A
Hulk
implementation
800
x44850
486A
Calculating Function
implementation
,
math
800
x44231
61A
Ultra-Fast Mathematician
implementation
800
x42757
200B
Drinks
implementation
,
math
800
x42611
469A
I Wanna Be the Guy
greedy
,
implementation
800
x40339
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x40315
228A
Is your horseshoe on the other hoof?
implementation
800
x39347
144A
Arrival of the General
implementation
800
x38643
443A
Anton and Letters
constructive algorithms
,
implementation
800
x37769
785A
Anton and Polyhedrons
implementation
,
strings
800
x36371
520A
Pangram
implementation
,
strings
800
x36351
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x34784
510A
Fox And Snake
implementation
800
x32208
1352A
Sum of Round Numbers
implementation
,
math
800
x30783
581A
Vasya the Hipster
implementation
,
math
800
x30632
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x30417
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x29632
1367A
Short Substrings
implementation
,
strings
800
x29299
427A
Police Recruits
implementation
800
x29009
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x28098
758A
Holiday Of Equality
implementation
,
math
800
x27606
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x27242
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x26317
703A
Mishka and Game
implementation
800
x26130
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x25317
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x24970
509A
Maximum in Table
brute force
,
implementation
800
x24356
1433A
Boring Apartments
implementation
,
math
800
x23993
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x23967
707A
Brain's Photos
implementation
800
x23849
1097A
Gennady and a Card Game
brute force
,
implementation
800
x23699
431A
Black Square
implementation
800
x23562
492A
Vanya and Cubes
implementation
800
x23254
935A
Fafa and his Company
brute force
,
implementation
800
x23052
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x22784
1372A
Omkar and Completion
constructive algorithms
,
implementation
800
x22648
151A
Soft Drinking
implementation
,
math
800
x22452
1325B
CopyCopyCopyCopyCopy
greedy
,
implementation
800
x22245
1186A
Vus the Cossack and a Contest
implementation
800
x22011
540A
Combination Lock
implementation
800
x21894
711A
Bus to Udayland
brute force
,
implementation
800
x21673
731A
Night at the Museum
implementation
,
strings
800
x21637
1426A
Floor Number
implementation
,
math
800
x21405
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x21123
119A
Epic Game
implementation
800
x20583
1462A
Favorite Sequence
implementation
,
two pointers
800
x20325
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x20234
599A
Patrick and Shopping
implementation
800
x19849
1433B
Yet Another Bookshelf
greedy
,
implementation
800
x19839
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x19736
822A
I'm bored with life
implementation
,
math
,
number theory
800
x19265
1220A
Cards
implementation
,
sortings
,
strings
800
x19114
32B
Borze
expression parsing
,
implementation
800
x18593
1454B
Unique Bid Auction
implementation
800
x18534
1303A
Erasing Zeroes
implementation
,
strings
800
x18516
686A
Free Ice Cream
constructive algorithms
,
implementation
800
x18434
1391B
Fix You
brute force
,
greedy
,
implementation
800
x18416
233A
Perfect Permutation
implementation
,
math
800
x18284
448A
Rewards
implementation
800
x18114
1095A
Repeating Cipher
implementation
800
x17681
1183A
Nearest Interesting Number
implementation
800
x17558
1003A
Polycarp's Pockets
implementation
800
x17175
1207A
There Are Two Types Of Burgers
brute force
,
greedy
,
implementation
,
math
800
x17165
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x16910
1300A
Non-zero
implementation
,
math
800
x16679
1462B
Last Year's Substring
dp
,
implementation
,
strings
800
x16658
1108A
Two distinct points
implementation
800
x16647
1228A
Distinct Digits
brute force
,
implementation
800
x16627
716A
Crazy Computer
implementation
800
x16585
1180A
Alex and a Rhombus
dp
,
implementation
,
math
800
x16582
1230A
Dawid and Bags of Candies
brute force
,
implementation
800
x16460
330A
Cakeminator
brute force
,
implementation
800
x16392
1041A
Heist
greedy
,
implementation
,
sortings
800
x16260
255A
Greg's Workout
implementation
800
x16078
1453A
Cancel the Trains
implementation
800
x15986
265A
Colorful Stones (Simplified Edition)
implementation
800
x15980
1006A
Adjacent Replacements
implementation
800
x15874
1005A
Tanya and Stairways
implementation
800
x15799
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